42521052042025 has 48 divisors (see below), whose sum is σ = 55597266547200. Its totient is φ = 32170725365760.

The previous prime is 42521052041977. The next prime is 42521052042061. The reversal of 42521052042025 is 52024025012524.

It is a de Polignac number, because none of the positive numbers 2^k-42521052042025 is a prime.

It is a super-2 number, since 2×42521052042025² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 691447179 + ... + 691508671.

It is an arithmetic number, because the mean of its divisors is an integer number (1158276386400).

Almost surely, 2^{42521052042025} is an apocalyptic number.

It is an amenable number.

42521052042025 is a deficient number, since it is larger than the sum of its proper divisors (13076214505175).

42521052042025 is a wasteful number, since it uses less digits than its factorization.

42521052042025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64018 (or 64013 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 42521052042025 its reverse (52024025012524), we get a palindrome (94545077054549).

The spelling of 42521052042025 in words is "forty-two trillion, five hundred twenty-one billion, fifty-two million, forty-two thousand, twenty-five".